Re:Red Hat Expecting X.org to “Go into Hard Maintenance Mode...
by throwaway2048 on Friday June 28, 2019 @06:59PM
(#20309498)
VSync fundamentally introduces a frame+ of delay by design, it does not matter what your FPS is.
Games still can render more FPS than mandated by vsync.
I tried playing sauerbraten (with SDL2) on sway other day, it was butter smooth (no tearing) with vsync off in game, and I felt no input lag unlike when I switch vsync flag on in game which limits FPS.
It probably does triple buffering, but somehow on sway it worked better than triple buffering of intel's xorg driver back when I tried that.